/**
 * Created by denishuang on 2017/11/27.
 */
// Warn if overriding existing method
if (Array.prototype.equals) {
    console.warn("Overriding existing Array.prototype.equals. Possible causes: New API defines the method, there's a framework conflict or you've got double inclusions in your code.")
}
// attach the .equals method to Array's prototype to call it on any array
Array.prototype.equals = function (array) {
    // if the other array is a falsy value, return
    if (!array) {
        return false
    }

    // compare lengths - can save a lot of time
    if (this.length !== array.length) {
        return false
    }

    for (var i = 0, l = this.length; i < l; i++) {
        // Check if we have nested arrays
        if (this[i] instanceof Array && array[i] instanceof Array) {
            // recurse into the nested arrays
            if (!this[i].equals(array[i])) {
                return false
            }
        } else if (this[i] !== array[i]) {
            // Warning - two different object instances will never be equal: {x:20} != {x:20}
            return false
        }
    }
    return true
}
// Hide method from for-in loops
Object.defineProperty(Array.prototype, 'equals', {enumerable: false})
